解题方法
1 . 若
,对任意正数
,不等式
恒成立.
(1)求实数k的取值范围.
(2)若k取最小值,且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0d68648b10fce54dfc19c5ee60086d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d486216b7345d17184da44bdebe784f6.png)
(1)求实数k的取值范围.
(2)若k取最小值,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48325f732c8ba723f3b5dc30e1eb9c08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0703ac5a9ee9d198efa0a5005e183850.png)
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2 . 已知函数
,
.
(1)若
,
,求
,
的最小值;
(2)若
恒成立,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ac18d45cf62862e456a5757bd81f6cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d87cc01dd0de04563061deb6c90fdce8.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/143b917df0520097be222accbddf9394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de1d395e6c48c0676a1488a299479d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/026694a3e840b4e1d706e70f4ed4d0c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66692ec49a458f9e48c7315d03dfc37b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa18838a13fda4e45612c32cdf98b71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50ac258ef199b8d5bea76b095301ba3.png)
您最近一年使用:0次
名校
解题方法
3 . (1)若
,求证:
;
(2)若
,且
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2684b72f9f38f5046c8ecd4280b7b14b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/353a0504082335c98b71653317beabbe.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2a9344f4fca7b9779ca7720e5277ea6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce754f70971ded6c2b6764d6fdb23db9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cf99adccc80f28343fedd8d0aad7429.png)
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名校
解题方法
4 . 已知
是二次函数,不等式
的解集是
,且
在区间
上的最大值是12.
(1)求
的解析式;
(2)试判断函数
在
上的单调性,并用单调性的定义证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a71baf6217604517fd98fa97d0f55b43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c76c41773aae617db1c0cc04bcf836f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa66623cf54b42d6d12be4c8edaa7071.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)试判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa9430ded94aee51af5a5de91fef1d30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ef1b322a7e2dbe40f17a0f9c61ec4aa.png)
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2024-01-10更新
|
296次组卷
|
4卷引用:重庆市开州区临江中学2023-2024学年高一上学期第二阶段性(12月期中)考试数学试题
重庆市开州区临江中学2023-2024学年高一上学期第二阶段性(12月期中)考试数学试题江西省上饶艺术学校2023-2024学年高一上学期12月月考数学试题(已下线)专题04 函数的性质与应用2-期末复习重难培优与单元检测(人教A版2019)(已下线)3.2.1单调性与最大(小)值(第2课时)
解题方法
5 . 已知
是定义在R上的奇函数,且
时有
.
(1)写出函数
的单调区间(不要证明);
(2)求函数
的解析式;
(3)解不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5749bb82edfb623c63ae4ec6b4d43da8.png)
(1)写出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/369100ccd44feaa77e5f119ea949a879.png)
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名校
解题方法
6 . 已知函数
,
.
(1)若
,
,求
,
的最小值;
(2)若
恒成立,
(i)求证:
;
(ii)若
,且
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ac18d45cf62862e456a5757bd81f6cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d87cc01dd0de04563061deb6c90fdce8.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/143b917df0520097be222accbddf9394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de1d395e6c48c0676a1488a299479d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/026694a3e840b4e1d706e70f4ed4d0c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66692ec49a458f9e48c7315d03dfc37b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa18838a13fda4e45612c32cdf98b71.png)
(i)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50ac258ef199b8d5bea76b095301ba3.png)
(ii)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a815c292c17e3c59d9c5c663f7370b5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2023-09-25更新
|
145次组卷
|
2卷引用:河北省秦皇岛市青龙满族自治县2023-2024学年高一上学期期中联考数学试题
名校
解题方法
7 . 已知函数
.
(1)解不等式
;
(2)若
,
满足
,且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a8e2b28d57814feeebfc4a1134358f6.png)
(1)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f97a1212828a5aade4637eb80cc09bb.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/728697bd9af445ae7525af9168fdf816.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/859458471c86ae39e0cc42d2d960d03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/475c9073257b3d0760e2c6051a82d592.png)
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2023-10-18更新
|
240次组卷
|
2卷引用:福建省厦门第一中学2023-2024学年高一上学期第一次适应性练习数学试题
2023高一·全国·专题练习
名校
解题方法
8 . 在集合论中“差集”的定义是:
,且
(1)若
,
,求
;
(2)若
,
,求
;
(3)若
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f4bcaec7926363d8f77c6e773920d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b998f1e3675e0fa3b790c416a751af63.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a9e6ad1166c7625e63b80e75b2fb1d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2755a85584173902f146eacf40102723.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e9e460c144f7a2141d2df0308b125f2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26cb7961d2d6957cfd6b4af403450e5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6846ad147da3f53658602eade09631d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e9e460c144f7a2141d2df0308b125f2.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7321a9fa7a6ef6be6e40c96709763930.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6846ad147da3f53658602eade09631d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfe3404ade72e644b48d19572c173c93.png)
您最近一年使用:0次
解题方法
9 . 已知关于
的不等式
对任意实数
恒成立.
(1)求实数
的取值范围;
(2)记实数
的最小值为
,若
均为正实数,且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9800cf038376bb0c550ea354af615924.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)记实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f781b9233eccd93276a9c333c604a4e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea10079b6346e90ba3818727244ce44a.png)
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2023-05-16更新
|
284次组卷
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2卷引用:贵州省贵阳市2023届高三3+3+3高考备考诊断性联考(三)数学(文)试题
名校
解题方法
10 . (1)当
时,求不等式
的解集;
(2)若正数a,b满足
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a92919b40e8f25eb298a109869407a58.png)
(2)若正数a,b满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be97cd1c7111b654d87d8fbb63b6a84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a5ba525fd8cea081aa689b7651d0602.png)
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